Yielding support for pinions of box motions



Dec 7 1926. 1,609,543

A. A. GoRDoN YIELDING SUPPORT FOR PINIONS OF BOX MOTIONS FilefApril 25, 1926 Patented Een 7, 1925,k l.

UNITED "stares ALBERT A. sonnen, or woncnsTnn, iASsAcnUsnTTs. Assis-non Tocaeinrroira Y KivoWLns nooit won-KS, or

Y MASSACHUSETTS.

Application filed April 3,

having?,I thereon a plurality of segments of gear teeth which cooperate with pinions secured to cranks which in turn are connected to the lifting levers of the boxes. 'Connecy tions from the patternv chain control the.posit-ion of the leading tooth ofV each pinion, this tooth being slidably mounted ina slotV formed in the pinion and in one position beingl out of register with the segment of teeth on the master gear and in the 'other position being` located to engage the advancing tooth of the segment. It occasionally happens that the pinionV does not return to its proper position before the first tooth of the segment arrives in cooperating position therevsiithand under these circumstances the first tooth of the segment will engage the outer face of the sliding` tooth instead of a radial face. In order to prevent breakage under these conditions I propose to `mount the` pinions on yielding frames and in the case of a box motion which will .control the position of four boxes either on a 2 X 2 loom `or a 11 X 1 loom there will be .two pinions and two frames. It is a more particular object of my invention to supply a single spring connecting` the two frames and holding the same in yielding position, this ar-l rangement permitting a compact construction.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein I have shown a convenient embodiment of my invention,

Fig. 1 is a front elevation of a box motion for a 2 X 2 loom showing the surrounding oil boX in section,

Fig. 2 is a vertical section on line 2 2 of Fig. 1 showing.` the frames which support the wonoiisinn, MASSACHUSETTS, A conronfATIon o11 Yinnnine SUPPORT non Piiirons on non Mertens. Y

192e. serial No. mais?. f

pinions in normal position and held yield-y A inglyY by a single resilient device, and` Fig'. B shows an abnormal conditioniof the box motion with one of the frames ,moved against the action of the single resilient device to a position of safety. y Y

Referring' to the drawings it will be seen that I have provided a loom frame 10 in the lower portion of which is mounted for constant` rotation the usual bottom shaftll which extends through the inner wall 12 of an oil box. Keyed to the outer end of the bottom shaft -is a master gear 14 which is provided with spaced toothed segments 15 Said segments are ani and 16, respectively. l gularly displaced with regard to each other and cooperate with piiiions 17 oneof which,

is shown in the drawings, namely, the one which cooperates with segment 16.

The frame 12 Vhas oppositely extending,vr

arms 1S in which are mounted pins 19 each of which has pivoted thereona support 20. The upper portion of each of Said supports has extending therethrough astub shaft 21.l each stub shaft Vhaving keyed thereto one of the pinions 17. The inner end of each stub shaft has pinned thereto, a crank plate 22 which is pivotally connected to an upwardly extending link 23. Said plates are each provided with spaced. contacting portions 24 which cooperate with aspring pressed lock ing lever 25 pivoted at 26 and held downwardly by spring 27 against said portions 24 to hold the pinions in proper position with respect to the segments. The'lower ends of the spring 27 may be supported by pins 2S Secured to the arms 18.

Extending upwardly from each of the Supports 2O is an ear' 29 one of which has threaded therein an eye bolt 30 and the other of whichl is notched as at 31. A tension spring 32 has one end thereof received bythe eye of the bolt 8O and the other end by the notch S1V and said spring` 32 passes through Y an opening 33 formed in the web 34 of the frame 12.

Each pinion has associated therewith a control lever, one being Shown at 35 in Fig; 1. Each control lever is pivoted as at 36 on a fixed part of the frame 12 and is attached to a connector 37 controlled by a box pattern chain (not shown) to move the finger 38 inwardly when said connector is raised,

Maasai inni? trice.

Each shaft 2l has slidably mounted thereon a tooth 39 which enters a slot @l0 lformed in the corresponding pinion. Then the lever 35 is down the tooth 39 is in alignment with the corresponding segment and as the latter rotates the leading tooth thereofl will engage the tooth 3i) and initiate rotation of the correspondingpinion. It is to be understood that the mechanisms mounted on the supports 2() are substantially the same, the pinion 17 on the right hand shaft being operated by segment lo While the pinion on the other shaft is actuated by segment lo. The master gear and pinions are well known and also their control and form no part of my present invention, being similar to the corresponding parts of Patent No. 36%,(397.

Should the lock lever 25 fail for any reason and the sliding tooth 39 be improp` erly placed With respect to the correspondinfr segment the parts may assume the position shown in Fig. 3, Where the leading tooth of the segment 16 is shown as engaging the outer face of the tooth 39 instead of a substantially radial face. Under these conditions the supports 20 Will move away from the bottom shaft 1l against the action of tension spring F rom the foregoing it will be seen that I have provided a yielding mounting for a plurality of box motion pinions so constructed that a single spring Will serve the purpose of holding each pinion in normal position. The improper position of kthe parts as shown in Fig. 3 very rarely occurs and the further possibility that both pinions Will be improperly positioned at the same time is very remote, so that although spring 32 is connected to both of the frames 20 yet it will very seldom if ever be called upon to evpandl in both directions to permit yielding movement of two frames at the same time, and a comparatively short spring may therefore be used.

Having thus described my invention, it will be apparent that changes and modifications may be made therein by those skilled in the art without departing trom the spirit and scope of thc invention, and l do not- Wish to be limited to the details herein disclosed, but what I claim is:

l. ln a box motion for looms, a regularly rotating master gear having a pair of segments of gear teeth, ay separate pinion to be operatively connected to each segment,

a shaft on which. each pinion is mounted, a pivoted support for each shaft, and a single spring attached to the supports and holding the pinions yieldingly in operative position relatively to the master gear.

In a box motion for looms,l a frame Work, a regularly moving master gear having a pair of spaced segments of gear teeth, a separate pinion for each segment of teeth, a shaft for each pinion, a pivoted support for each shaft, and a single resilient means connected to the supports and holding each support yieldingly against the framework.

3. lin a bo); motion for looms, a constant'- ly rotating master gear having a pair of spaced segn'ients of gear teeth, ay pinion for each segment, a support for each pinion, each support boing movable to carry the pinion carried thereby away from the Corresponding segment therefor, and a single resilient device connected to said supports and holding said pinions yieldingly in operative position relatively to the master gear.

.t. n a box motion for looms, a constantly rotating master gear having separated segments of gear teeth, a pinion Jfor each seg'- ment. a. movable support for each pinion, and a single resilient means lying` between ,the supports and operatively connected to each pmlon and holding` each pin-ion yield ingly in operative position with respect to the corresponding segment.

In a box motion for looms, aconstantly rotating master gear having separated segments of gear teeth, a frame work, a pinion for each segment, a shaft for each pinion, a support for each shaft pivotally mounted on the frame Worlt. and a single yielding device common to the supports and holding the pinions yieldingly in operative relation with respect to the segments.

t3. In a box motion for loo1ns,`a constantly rotating master gear having` a pair of sep` arated segments of gear teeth, a pinion for each segment, a pivotal support for each pinion, a frame Work on which eachsupport is pivoted, and a single resilient device connected to each support and passing through a portion of the frame work and holding said supports yieldingly against said frame Work.

ln testimony whereof I have hereuntoY affixed my signature.

ALBERT A. GORDGN.

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